Recording apparatus



Jan. l, 1946.

H. L. THoLsTRuP 2,392,275

RECORDING APPARATUS Filed Deo. 14; 1944 2 sheets-sheet 1 l f 5554 L r 571g-@ I 69H.: Il 5o 5o 76 RM* 'n I 7 71 90 I I A CLM /I @6I I I ,I I?

If 59 RM Il. .,I l, @29 L z/4175 i 5090 26 I X21 10 |r 27 42 RME l t,`WM5 62 ////f/I v I |||Il III ,J l *I "I w RM4 1. IR Q 3425' I III j I{c} 69 v 45 24 Il Il 'I OV 57 RP@ I f l Il|| Il l Il 12 FP RIIQPZ I 55|14 RP?) 54 Rm 16 l Hf; 79\ RFE I 26 I ua va j I I ,07 l n a an 1 Il| a"no zivil /9'6/ -n I II1fj I l `9560 I5:- 5 III r/ I n 4 I' T 5 11 68 66INVENTOR ffl. 77/0L5reaf Jan. l, 1946. H. L.. THoLsTRUP RECORDINGAPPARATUS Filed Deo. 14, 1944 2 Sheets-Sheet 2 Patented Jan. 1, 1946uNirED STATE RECORDING ArARA'rUs Henry L. Tholstrup, Rochester, N. Y.,assigner to International Business Machines Corporation, New York, N.Y., a corporation of New York yApplication December 14, 1944, Serial No.5618,161

1 Claim.

This invention relates to recording apparatus and more particularly toimprovements in code recording apparatus of the type wherein a pluralityof code punches corresponding, respectively. to the code positions of apredetermined code system are selectively operated by cyclicmeans topunch a code hole or holes in a field of a record strip representingdifferent data in accordance with such code system. The presentapplication is a continuation in part of my copending application SerialNo. 492,895, filed June 30, 1943.

The invention has for a. general object to provide apparatus of the typeexplained which is of new and improved construction and which operatesin an effective manner.

A further and more specific object is to provide apparatus of the typereferred to, including a new and improved key operated means which, whenactuated, provides for the selective operation of the code punchesduring one operating cycle and prevents a repeat operation of such codepunches until the key operated means has rst been manually released.

Qther objects of the invention will be pointed out in the followingdescription and claim and illustrated in the accompanying drawings,which disclose, by *way of example, the principle of the invention andthe best mode, which has been contemplated, of applying that principle.

In the drawings:

Fig. 1 is an isometric view illustrating somewhat diagrammatically thestructure of the .code tape .punch shown in my Acopending application,re-

ferred to above, certain elements having been added for the purposes ofthe present disclosure; and

Fig. 2 is an electrical wiring diagram illustrating the componentelectrical elements and their circuit connections, which form parts ofthe preferred embodiment of the present invention.

Referring now in detail to the construction illustrated, it is notedthat the code tape punch shown in Fig. 1 is identically the same as isshown in detail ln Figs. '7 to 16 inclusive of the above identifiedcopending application of which this application is a continuation inpart. with the exception that a caml and a pair of contacts l operatedthereby have been added to the construction of Fig. l hereof. Myaforementioned copending application contains a full and detaileddescription oi' the structure and operation of the tape punch. Only ageneral description of the main parts of this apparatus and theiroperation is required herein for a full understanding oi' the presentinvention.

The tape punch is indicated generally hy the reference character I0 andcomprises six rode punches indicated, respectively, by the referencecharacters RPI to RPS inclusive, and one feed hole punch FP. The codepunches RPI to RPG correspond, respectively, to the six code positionsof a predetermined combinational hole code and are so arrangedfthat whenselectively operated in a manner lwhich *will be presently explained.each will punch a code hole in a corresponding code position of arecording field in a record tape II. The code punches are arranged in avertical line as shown and thev tape is advanced in steps by a feedwheel I2 to bring successively blank recording fields into positionwhere they can be punched. The six code positions in the tape Ii areindicated at the left-hand end thereof by the numerals I to E inclusive.If desired, the same code system may be used herein as is disclosed inFig. 18 of my copending application, referred to above. It is noted thatthe feed hole punch FP is positioned between code punches RP2 and RP3and will operate during each cycle of operation to punch a small feedhole I3 in the tape between code positions 2 and 3. The radial pins Ilof the feed wheel I2 engage the feed holes to advance the tape, as willbe readily understood Y As disclosed in my copending application. thecode punches and the feed hole punch are suitably mounted for lengthwisepunching movement and are urged toward and normally held in retractedposition by tension springs i5. Punch actuating levers 20 to 26inclusive are operatively connected, respectively, to the feed holepunch FP and the code punches RPI to RPS, inclusive and the actuatinglevers 20 to 26 inclusive are supv ported, respectively. intermediatetheir ends by eccentric portions 2l fixed to a rotatably mountedvertical operating shaft 28. The shaft 28 is con nected at its upper endby suitable gearing 29m a horizontal operating shaft 30. Seven latchlevers 40 to 46 inclusive are provided, respectively, for the sevenpunch actuating levers 20 to 26 inclusive. Each latch lever, whentripped in a man-v ner which will be presently explained. engages j land holds against movement the end of its related.4 punch actuatinglever which is. remote frorn 'its code punch. With an actuating lever sohel'ciby its related latch lever and upon the shaft 28 being' rotated,-the eccentric portion 21 will move such actuating lever about the endthereof whichis held by its related latch lever and will thereby movelits related code punch lengthwise into punching engagement with therecord sheet.

As a feed hole i3 is punched in the tape by the punch FP during eachoperation of the apparatus, the latch lever 4I) corresponding thereto isalways in tripped position and thereby holds the adjacent end of itspunch actuating lever 28 against a stationary stop bar 41. Fig. 1 showsthe latch lever 48 in tripped position. The other latch levers 4I to 46corresponding, respectively, to the six code punches RPI to RP6inclusive; are normally held out of untripped or latched position, byarmatures 48 of related selector magnets. There are six selector magnetsRMI to RMS, inclusive (see also Fig. 2), and they coact, respectively,with the six latch levers 4I to 46 inclusive to control the operation ofthe latter and the operation of their related code punches. If a latchlever is held in its normal or untripped position when the shaft 28isrotated, the spring I5 of its related code punch is strong enough tohold the latter in its retracted position and thereby also hold theadjacent end of its related punch actuating lever.

Thus when the shaft 28is rotated, each punch actuating lever which isnot latched by its related latch lever will move about the end thereofwhich is connected to its related code punch and the end of the punchactuating lever which is remote from its code punch will move outwardand away from the stop bar 41.

The selector magnets RMIY to RM6 inclusive are selectively energized ina manner which will be presently explained and, when energized, attracttheir related armature 48 and thereby release, or trip, their relatedlatch levers. A tension spring 50 is attached to each of the latchlevers, and when each ofthe latch levers 4I to 46 inclusive is releasedby the energizing of its related selector magnet, its spring 50 movessuch latch lever about a fulcrum support shaft I and into latchingengagement with the end of its related punch actuating lever.

As explained in my copending application referred to above, the codetape punch III is cyclically operable under the control of a clutchmagnet CLM. A main drive shaft 53 is continuously rotated by a pulley 54and belt 55 from a suitable electric motor, not shown in Fig. 1 butindicated diagrammatically in Fig. 2 by the reference character 56. Aone-revolution clutch 51 is provided and functions each time it istripped by i the energizing of the clutch magnet CLM to connect thepunch operating shaft to the drive shaft 53 so that the operating shaft38 (and shaft 28) is rotated for one revolution and then disconnectedfrom the drive shaft 53.

The construction and operation of the onerevolution clutch 51 is shownanddescribed in detail in my copending application, referred to above.and consequently a full disclosure thereof is not/necessary herein, itbeing suilicient to say that each time the clutch magnet CLM isenergized its yarmature 58 is attracted against the force of a tensionspring 59 so that the end 60 thereof moves'out of engagement with aprojecting element 6I of the clutch 51 and the latter moves under theforce of a spring (not shown) toY effect engagement of a sliding dog 62with a ratchet wheel 63. The dog 62 is mounted in a clutch barrel 64Afixed to the shaft 30 and the wheel 63 is fixed to the drive shaft 53,so that their engagement provides a driving connection between theshafts 53 and 39. As will appear hereinafter, the magnet CLM isdeenergized as soon as the shaft 30 commences rotating, and the spring59 will then move the end 6I) of the armature 58 into engagement withthe barrel 64 so that it will lie within the path of movement of theprojecting element 6I of the clutch. When the latter engages the end 68,the clutch V51 is thereby disengaged and the shaft 38 is held in thedisengaged or declutched position shown in Fig. 1.

As shown in Fig. 1, a bail member 66 is rotatably mounted on the fulcrumshaft 5I and extends across all of the latch levers 48 to 46 inclusive.The lower end of the bail member is formed with a rearwardly extendingarm 61 and the outer end of the latter coacts with the movable springblade 68 of a pair of contacts 69. The arrangement is such that when anyof the selector magnets RPI to RP6 inclusive is energized and itsrelated latch lever is released such latch lever will engage the bail 66and move the latter against the spring force of the blade 68 to closethe contacts 69. As disclosed in my copending application referred toabove, the latch lever 40 for operating the feed punch FP is notched outso that it will have no effect on the operation of the bail member 66.As will be apparent hereinafter when the wiring diagram shown in Fig. 2is described, the bail contacts 69 are connected in series with the coilof the clutch magnet CLM and with a pair of contacts 18 operated by acam 1I on the punch operating shaft 30. When in home position, the cam1I holds the contacts 18 closed. Thus, when the pair of bail contacts 69are closed as a result of the energizing of a selector magnet, as justexplained, the clutch magnet CLM is energized to operate the clutch 51and a cycle of rotation of the operating shafts 38 and 28 is effected.Soon after the beginning of a cycle of rotation, a cam 13 on the lowerend of shaft 28 moves a follower arm 14 and locking bail I5 against theforce of a tension spring y 16 and into engagement with the latch levers48 to 46 inclusive. The construction is such that when so moved, thelocking bail 15 will function to lock or hold any latch levers whichhave been tripped in their latched position and will hold any latchlevers which have not been tripped in their untripped position. Thelocking bail 15 remains in operative engagement with the latch leversuntil after the code holes are punched. After the punching of the codeholes, a knock-off bail 18 fixed to the fulcrum shaft 5I and operatedthrough an arm 19, also fixed to the shaft 5I, from a pin 88 projectingfrom one side of the cam 13, engages all of the latch levers which havebeen previously tripped and moves the latter out of latching engagementwith their punch acting levers and back to their untripped position.Concurrently with the latter, a pair of armature knock-off bails 82 and83, operated, respectively, by arms 84 and 85 from eccentric pins 86 and81 projecting from opposite sides of a disk 88 fixed to the shaft 28,move into engagement with the armatures 48 of the selector magnets andmove the armatures outward from their coils so that when the latchlevers are moved by the knock-off bail 18, as just explained, the ends90 of such latch levers are engaged and latched again by their relatedarmatures. A full disclosure of the detailed construction and operationof these bails during a cycle of operation of the apparatus is includedin my copending application and consequently further detailed.description herein is considered unnecessary.

During the latter part of the cycle of operation of the operating shaft38 and 28 a cam 92 fixed to the shaft 28, engages a follower 9 3 andthrough a connecting pin 94 moves a dog 95 into engagement with aratchet wheel 96 fixed to theA tape feed shaft 91 and thereby advancesthe tape to move the next blank recording field into recording position.

As disclosed in my copending application, referred to above, theoperation of the tape punch l may be controlled by the conventional keyactuation of a typewriter (not shown herein) As the control by thetypewriter is not a part of the present invention it is believedsui'ncient for the purposes of the present disclosure to say that eachtime a typewriter key is depressed, a permutation unit (not shown)selectively closes code contacts corresponding to the code designationof the typewriter key actuated and such code contacts close energizingcircuits for corresponding selector magnets of the group RMI to RMB andthereby effect a cycle of operation of the recording apparatus, duringwhich a code designation representing the key actuated is recorded inthe tape and the tape is then spaced, as was described previously. InFig. 2 of the drawings, the code contacts selectively closed by theVpermutation unit as a result of the just explained typewriter keyactuation, are shown and are indicated by the referencecharacters SCI toSCS inclusive, and they are connected, respectively, by six code wires Ito I I6 inclusive to the six code selector magnets RMI to RMB inclusive.As explained in said copending application, the operation of thetypewriter keys and the permutation unit is such that the code contactsare selectively closed momentarily and while closed common contacts Care closed to complete an energizing circuit for the selector magnets.

The electrical circuits to effect the just described operation of thetape punch will now be described. The wires |00 and |0I are adapted.

to be connected to the available alternating current supply, such as a110 volt A. C. line. Two power switches are provided and are indicatedat |03 and |04. The switch |04 is mounted on the typewriter (not shown)and when closed establishes an energizing circuit through a motor |05which, as explained in my copending application referred to, actuatesthe typewriter. O ne side of the motor is connected to the A. C. supplywire |00 and the other side of the motor is connected by a wire |06 andthe power switch |04 with the other A. C. supply wire IOI. The powerswitch |04 when closed also connects the A. C. supply wire |0I with awire |01 which is in turn connected to a contact |20 of the power switch|03. The latter is a double pole single throw switch and, when closed,one blade |2| thereof engages the contact |20 to connect the punch motor5B across the A. C. line and to supply A. C. to the primary |22 of atransformer |23. The latter circuit extends from the closed blade |2I,which as just stated is connected through the closed switch |04 to theA. C. wire |0I, through the wire |24, the motor 56 and primary |22 inparallel, a wire |26, and to the other A. C. supply wire |00. Thus withthe switches |04 and |03 both closed, the motors |05 and 56 will operatecontinuously and current is supplied to the primary |22 of thetransformer |23'.

The secondary |2'I of the transformer is connected across the inputterminals of a conventional form of-full wave rectifier |28. The lattersupplies direct current for the control circuits of the recordingapparatus. terminal of the rectifier is connected to the positive D. C.supply wire and the negative output terminal is connected to thenegative supply wire |3I. The negative wire |3| is connected through theother blade |32 of the power switch The positive output to the returnsides of each of the selector magnets RMI to RMB inclusive. The positivewire lIlll is connected to the upper contact of the pair of commoncontacts C.

A cycle of operation as controlled by the code contacts SCI to SCBinclusive will now be described. As explained in my copendingapplication referred to above, when a typewriter key is actuated one ormore pairs of code contacts of the group SCI to SCS inclusive whichcorrespond to the code designation of such key, are closed. Shortlythereafter the common contacts C are closed and a circuit is establishedfrom the D. C. positive wire |30 through the common contacts C, the pairof code contacts, or pairs of code contacts, of the group SC| to SCBinclusive which have been closed by the actuation of the typewriter key,the corresponding code wire, or wires, of the group |I| to IIBinclusive, the corresponding selector magnet, or magnets, of the groupRMI to RMB inclusive.

the wire |33, the switch blade |32`to the negative DC wire |3I. Asexplained above, the energization of the selector magnets will result inthe closing of the bail contacts 09 andin establishing an energizingcircuit for the clutch magnet CLM which is'traced as follows: from thepositive wire |30, bail contacts 69 now closed, wire |35, cam contacts'I0 which are closed at the home or inactive position of the tape punch.

the clutch magnet CLM and the wire |33 to the negative wire |3I. Theenergization of the clutch magnet will provide for .one.revolution ofthe shafts 28 and 30, during which the code designation corresponding tothe typewriter key actuated is punched in the tape. The tape is advancedby the feed wheel l2 and the code tape punch is restored to its home orinactive'position shown in Fig. 1.

In accordance with the present invention a new and improved means isprovided which coacts with the elements of the punching appat ratus tocontrol the operation of the latten This operation control meansfunctions in response to the actuation of a manually operated key toeffect one cycle of operation of the punchinrtr apparatus to record inthe tape a particular code designation selected for such key. Thisoperating control means also functions to pre` vent a second operationof the punching apparatus until such key is iirst released and thenactuated a second time.

In Fig. 2 two manually operated keys |40 and and |4I are provided foractuating the just mentioned operating control means to effect therecording of the selected code designationfthese keys corresponding,respectively, to thekeys |04 and 204 in my copending applicationreferred to above, and, as explained in such application. the reason forproviding two such keys is solely for convenience. The key |40 islocated on the typewriter (not shown) and the key |4| on the tape punch0. As in the copending application, the depressing of either key |40 or|4I effects the recording of a "Stop code designation, which is a codehole in code positions I, 4', 5and 8.

As the depressing of either key |40 or key |4| provides for the saineoperation, such operation will be described in connection with only thekey |4I. As shown in Fig. 2, the code wires ||4, ||5, and ||6 areconnected, respectively, to normally open key contacts |44, |45, |40,and |41, and a normally open keyv contact |48 is connected by a-wire|49, wire |50, normally closed relay contacts and Wire |52 with thepositive D. C. supply wire |30. When the key |4| is depressed thecontacts |44, |45, |45, and |41 are all connected to the contacts |45and a code punch selecting circuit is thus establishing which is tracedas follows: from the positive wire |3|I, through the wire |52, normallyclosed relay contacts |5|, Wire |50, wire |45, contacts |48, |41, |45,|45, and |44, the code wires ||4, ||5, and ||5 in parallel, the codeselector magnets RMI, RM4, RM5, and RMB in parallel, the wire |33, andswitch blade, |32 to lthe negative Wire |3|. Thus, when the key |4|isdepressed the selector magnets RMI, RM4, RM5, and RMS are energized,the bail contacts 59 are closed to energize the clutch magnet CLM and acycle of operation of the punching apparatus iseilected, during whichcode holes are punched in the positions 4, 5, and 5 of the tape whichrepresent the "Stop" code. It will be appreciated that any other codedesignation could be selected if desired.

In order to prevent repeat operations of the punching apparatus when thekey 4| is depressed. in the manner just described, a nonrepeat relay |55is provided which includes a coil |5I, the pair of .normally closedcontacts |5|, referred to above, and a pair of normally open holdcontacts |52. The key |4| is also provided with a pair of normally opencontacts |53 which are insulated from its other contacts |44, |45, |45,`|41, and |45, but are closed along with the latter when the key isdepressed. One` contact of the pair |53 is connected by a wire |54 withthe positive supply wire |30 andthe other contact of the pair |53 isconnected by a lWire |65 and wire |55 to one of the pair of normallyopen cam operated contacts 5, and the other of the pair of cam contacts5 is connected by a wire |51 with one side of the relay coil |6I, theother side of the latter being connected by a wire |58 with the negativeterminal of the rectifier |25. As shown in Fig. l, the 'cam 1 is mountedon the punch operating shaft 30 and the contacts 8 operated thereby areopen at the home or inactive position of the shaft The normally openpair of relay hold contacts |52 are connected, respectively, with thewire |55 and wire |51 so that when the hold contacts close,

' they shunt out the cam contacts 5.

From the foregoing, the operation which takes pl'ace as a result ofdepressing the key |4| will be apparent. In addition to closing the codepunch selecting circuit and thereby effecting operation of the punchingapparatus, as previously de-v scribed, the 'key |4| when depressed alsocloses the contacts |53 and thereby conditions an energizing circut forthe non-repeat relay |55. The circuit thus conditioned, is completedwhen the cam 1 on thepunch operating shaft 30 closes its contactsl Therelay I 50 when thus energized opens its normally closed contacts 5| tobreak the punch selecting circuit previously traced, and closes its holdcontacts |52 to shunt the cam convco tacts 8 and thereby hold the relay|50y energized as long as the key |4| is held depressed to close dropout the non-repeat relay |50 and thereby permit its contacts I5| toagain close.

It will be readily understood by those skilledl in this art tl :t whilethe operation control means l has been disclosed herein as providing forthe recording of only one selected code designation when either of twokeys is depressed, it may be readily modiiiedso that the two keys |45and 4| v will effect the recording of different codes. For example, thenormally open contacts |44a, |45a.

|45a, and |`41a of the key |40 may be simply con-V nected to selectedcode wires other than those.

shown. In the same manner any additional number of keys may be providedto record diilerent code designations selected therefor.

While there have been shown and describedand pointed out the fundamentalnovel features. of the invention, as applied to a single modifica--tion, it will be understood that various omissionsand substitutions andchanges in the form and details of the device illustrated'and in itsopera-V tion may be made by those skilled in the art without departingfrom the spirit of the invention. It is the intention therefore to belimited only as indicated by the scope of the following claim.

What is claimed is:

In recording apparatus comprising an operating shaft, a source of power,a clutch magnet operable when energized to connect said one operatingcycle, a plurality of code punches corresponding, respectively, to thecode positions of a preselected code system and being operativelyconnectable to said shaft, when selected, to punch code holes incorresponding code positions in a record sheet, a plurality of selectormagnets corresponding, respectively, to said'code punches and operablewhen energized to selectgtheir related punches, and means operable, whena selectormagnet is energized, to energize said clutch magnet; thecombination of a non-repeat electrical relay including a pair ofnormally-open hold con- Y tacts, and a pair of normal1y-closed contacts;a code punch selecting circuit including a source of electrical energy,a predetermined number of said selector magnets. said pair ofnormally-closed relay contacts, and a plurality of normally-open keycontacts operable when closed to connect said HENRY L. THOLSTRUP.

noter source and said shaft for rotating the latter forv

